Disk cultivator.



PATENTED JULY 24, 1906. G. W. MIXTER. DISK GULTIVA'TOR. D APPLICATION FILED APR.19.1906.

{SHEETS-SHEET 1.

WITNESSES INVENTOR 9, f Allarney$ PATENTED JULY 24, 1906.

G. W. MIXTER. DISK GULTIVATOR. APPLICATION FILED APR.19,1'906' 2 SHEETS-SHEET 2.

INVENTO a A M/A V I Allomey).

S m E W W.

UNI TED s'rATEs GEORGE W. MixrEnoF MOLINE, iL lmois, ,AssisNoR To DEERE. & M-

PAN Y, OF MOLINE, ILLINOIS,

PaTaN'r oFFioE- A CORPORATION or ILLINOIS.

DISK C'ULTIVATOR- Specification of Letters Patent.

To all whom it may concern:

.Be it known that I, GEORGE W. MrxTER, a

citizen of the United States, residing at Mo line, in the county of Rock Island and State of Illinois, have invented certain new and useful. Improvements in Disk Cultivators;

and Ido hereby declare the followingto be a full,'clear, and exact description of thein vention, such as will enable others skilled in" as hereinafter described, and particularly he artjt which it appertains to make and ",the me. i

This invention relates to d especially to the means of attachme .t of

the rotary disks to the standard, arm, shank, yoke,- or other member of the' cultivator rig or frame which carries the disk, the objects of my improvement bein to relieve the hubs of the disks from the end thrust or pressure due to the resistance of thel earth to the disks in their travel, toincrease the efliciency and durability of the bearings, avoid wear of the 'metal parts, to obviate injurious effects from dirt'. and grit, and to-provide a simple and ractical diskan construction. .These results are attains by means substantially pointed out in the claims.

In the accompanying drawings, which form a part of this specification, the invencomprising three disk/s mounted on a s tion is shown embodied in a cultivator-gapg a t, wh ch is carried by 1a,,yoke straddling the middle disk, said yokebeing adapted for attachment to a cultivator-rig carried by the implement; but itlwill be understood that the. invention may be embodied in other forms or arrangements. k

The construction of the cultivator-rig and frame of the implement does not enter into the present invention, and thereforethese parts are not illustrated.

Figure 1 of, the drawings is an elevation of said cultivator-gang embodying my invention, parts thereof being represented in section. Fig.2 is a perspective view of a fragment of the disk-shaft, showing a collar thereon which takes the end thrust. Fig. 3

'shows two of the semicircular wooden bushboxes.

Fig. 4

Fig. 5 is a central vertical section i 't hrough one of the bearings.

Reterring in detail tothe drawings, the

disk cultivators,

yoke A carries the shaft or spindle B, on which the cultivator-disks C are affixed.

These disks may be rigidly mounted on the shaft by any suitable means, as by seating the disks in the hubs D and clamping them Patented July 2'4, 1906.

thereto byjthe nuts or rivets E; the hubs G being pinned or otherwise rigidly secured on the shaft. The shaft-bearings F are composed each of two half-boxes, the lower. one of which is preferably inte al with its yokearm, while the upperhalfox or cap is held down on'the lower one by suitable bolts in the usual'way. The upper half-box is also I shown having a bottom flange f overlying the top of the lower half-box, as shownmore clearly in Fi 5, to protect the bearin s from dirt or soil W 'ch may fall from the disis. It 'is observed that one bearing is arranged between eaoh-pair of disks. Between the hubs D and the adjacent ends of the bearings F there is suflicient space to permit dirt to fall .loosely between these parts and under ordinar circumstances not to be. clogged or we ged into this space. The same is true of the space between the nuts E and the opposite ends of the bearings F, this space being wider on theoutside than next the shaft to prevent dirt clogging. At the center of each bearing and pinned or otherwise rigidly secured on the shaft isa collar G, and at both sides of said collar wood bushings H (desirably of maple) are fitted on the shaft within the bearing-boxes, which boxes are of suflicient size to hold said bushings. The collars G in conjunction with bushings H take the end thrust in. both directions, which acts on the shaft by reason of the resistance of the earth to the disks in their travel. boxes are shown havng internal segmental ribs f, which are slig tly raised from the inner walls of the half-boxes, and the bushings H are seated on said ribs. the bushings H for each bearing, two halfbushings for the lower half-box and two for the upper haltbox, arranged. at opposite sides of the collar G.

As shown in Fig. 5, the half-boxes in which the bushings are fittedare interiorly shaped so as to prevent the bushings from turning,

The half- There are four of.

the opposite sides of the bushings being shown with flat faces abutting against the flat interior sides ,of' the bearing-boxes. These bushings H, which may of'course be replaced when worn, take the end thrust and wear from the collars G and also receive the Wear of the shaft in its rotation, thereby providing bearings which are perfectly adapted to implements of this charactenprotecting the metal parts and avoiding. the usual I abrading due to'entrance of dirt or grit, the

entrance of bearing bein moreover, protected from the dirt, as before explained. Having thus fully described my invention,

what I claim as new, and desire to secure by 'Letters Patent of the United States, is

ibearing-box, the upper half-box having a bottom flange overlying the top of the lower half-box, there being a substantial space between each end of the bearing-box and the hub portion of the adjacent disk, a collar secured on the shaft in the bearing-box, and v Wood bushings fitted on the shaft at opposite sides of said collar within the bearing-box.

3. A disk gang comprising a disk-shaft, a plurality'of disks thereon, a shaft-bearing between adjacent disks consisting of a two-part bearing-box, a collar on the shaft within said bearing-box, and wood bushings fitted on the shaft within the bearing-box at each side of said collar, the bushings at each side of the collar consisting of two half parts fitted respectively in the half-boxes.

, 4. A disk gangcomprising a yoke, alined bearingscarried by the yoke-arms, each consisting of two half-boxes one of which is integral with its yoke-arm while the other is detachably secured thereon, a shaft journaled in said bearings, a plurality of disks on said shaft, the middle disk being straddled by the yoke, a collar on the shaft in each bearing-box, and wood bushings in each bearing-box fitted on the shaft at opposite sides of the respective collars.

In testimony whereof I affix my signature in presence of two witnesses.

' GEORGE W. MIXTER.

Witnesses:

CHAs. N. STONE, E. L. MAYALL. 

